Pick-type mining bit with support block having rotatable seat

Details Pick-type mining bit with support block having rotatable seat Pick-type mining bit with support block having rotatable seat

1977-06-16

1979-02-06

Purser, Ernest R.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

175354, 299 92, E21C 1302, E21C 3518

Patent

active

RE0299006

ABSTRACT:
A pick type mining bit with a cylindrical shank has a support block with a bore and a hard insert detachably and rotatably mounted in the bore. The insert has a bore for rotatably receiving the shank of the bit.
The bit has a cylindrical working end projecting from the support block which tapers in at the tip and has a hard insert mounted in the tip. .Iadd .

REFERENCES:
patent: 1582332 (1926-04-01), Brutus
patent: 1820511 (1931-08-01), Van Patten
patent: 3397012 (1968-08-01), Krekeler
patent: 3498677 (1970-03-01), Morrow

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